Using the formula q=mcΔT (Three examples)
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- Опубліковано 7 вер 2024
- Calculate the heat absorbed when a mass of substance is heated from one temperature to another.
Calculate the mass of substance that can be heated by a certain amount of Joules of energy.
Calculate the specific heat capacity of a substance if you know the heat added, mass and temperature change.
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Grams x Specific Heat x Temp = Jouls Makes so much more sense to me than c=∆q/(m x ∆t)
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How many Juuls is that?
Your spelling is wrong
Its 'joules'
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So you can actually get a good idea of what compound you have if you know the energy gained, the mass and the change in temperature?
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I hope you see my question and answer. When do we convert it to Kelvin and how do we do it? In some questions, I made wrong as I didn't convert it.
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so first-time chem student here just out of curiosity is it always gonna be q divided by the other variables to find out what you need?
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What would be the sig figs based off?
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25cm³ of nitric acid is reacted with 25cm³ of potassium hydroxide.
Temparature change is 7.2K, and solution has a density of 1.0gcm³.
How much energy is released in this experiment?
m is 50 g because it’s 25mL+25mL
c is 4.184
Delta T is 7.2
Multiply those three number together
I actually understand, wow thank you so much
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Thank you.
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1:42 me when my son dissapears
This video will make my exam easy today
This is useful, thank you!
can I use this equation to calculate temperature change for global warming? I'm doing this for a pre-calculus class and I'm doing bad on my research and my partners arent helping me at all
What about when youre looking for the mass of the sample ? Not sure what to multiply
What happens when your only given one of the finial or initial temperuatures?
When you do flame calorimetry and you get the initial mass and final mass which mass do you use?
Thanks saving me from falling behind the Wolfs. 🤗
how to calculate the amount of heat without a specific heat Q=m*ΔT? Is there another around this?
when solving for anything other than C (Specific heat), should C be given from the start, or is there a way that you can figure it out by yourself?
How much energy must be removed from a 500 g block of ice to cool it from 0∘C to -20 ∘C? The specific heat of ice is 2090 Jkg⋅K. I got the answer as -20,900J but it says it is incorrect and that the answer should be 20,900J. Why?
You’re not supposed to make it negative no matter what the change in temp is. I realised that too in the first problem
Any tips on how to derive that equation?
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What if you only have energy and temperature?
Does anyone know how to solve for t1 or t2? I have a physics exam tomorrow and I'm really desperate.
I got one for that: What is the Final Temperature given Heat (q=mcΔT)
ua-cam.com/video/11I4giTqJqw/v-deo.html
@@chemistNATE Thanks a lot! I actually found it but I forgot to remove the comment.
My exam is today and you helped me out a bunch!
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1:42 You'll find him🙏
This is a part of physics in India....
There's a questions in my module.. can you please explain me how to answer this?
How much heat energy is gained per gram of liquid water when it is heated from 10.0°C to 11.0°C?
A. 4.18 J
B. 5.10 J
C. 6.15 J
D. 7.20 J
I don't really understand how to do that.. please explain it to me
Does it work if there is lets say a block of iron wich is pulled for 1 m and the energy wich got "disipated"( because of the friction betwen the block of iron and the land ) transformed in heating of theat block of iron and the land wich it slighted on
Honestly it SOUNDS like that would be true, unless there was heat created or dissipated in another way which hasn’t already been accounted for …
thanks
Do you have to turn the kj into j? Like you did on your second equation?
this was amazing, but the problems for my test only had 2 numbers to fill in! they would leave either the mass, joules or specific hear so i had no idea what to do and got a bad grade 😭😭😭😭😭😭
What if I’m not given temp? Only delta H and the mass ?
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Wait i've got a question. What's the formula for m and c and ∆T?
M is usually given in the question (sometimes it will be in mL because 1 g = 1 mL)
C is a constant, you look it up. For water it’s 4.184
Delta T is the change in Temperature
The way you hit that calculator was real fucking aggressive you need to calm down Nate
1.94 kg of mass..... (Is it per second or hour?
Why would you convert KJ to J?
What a genius!
thanks helped